CN203448722U - Welded bar stock and tool - Google Patents
Welded bar stock and tool Download PDFInfo
- Publication number
- CN203448722U CN203448722U CN201320496131.4U CN201320496131U CN203448722U CN 203448722 U CN203448722 U CN 203448722U CN 201320496131 U CN201320496131 U CN 201320496131U CN 203448722 U CN203448722 U CN 203448722U
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- knife
- handle
- cutter head
- stock
- hole
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Abstract
The utility model discloses a welded bar stock and a tool. The welded bar stock comprises a tool holder blank and a tool bit blank, wherein a first through hole is formed between the two end faces of the tool holder blank in a penetrating manner; the tool bit blank is provided with a welded part which is placed and fixedly connected into the first through hole of the tool holder blank; the tool holder blank and the tool bit blank can be further machined to form a tool holder and a tool bit, so that a welded tool is formed by the bar stock. According to the welded bar stock and the tool, the first through hole is formed in the tool holder blank, so that tight joint between a welding material and the tool holder blank and the tool bit blank is facilitated, and the welding material in the first through hole can be removed fully during replacement of the tool bit; moreover, cooling liquid can be injected into the first through hole when the tool is used for drilling or milling, and the tool is cooled by using overflowing cooling liquid.
Description
Technical field
The utility model is for holing or the welded type cutter of milling, and in order to be processed into the welded type bar of this welded type cutter about a kind of.
Background technology
General cutter for cutting can form according to the difference of function different cutter head forms, for example: cutter head is cone-shaped person mostly as form the cutter of boring on machined object, cutter head become flat-head shape person mostly as on machined object in established hole further this hole wall of milling to adjust the size of this hole.
The cutter of prior art mainly has a handle of a knife and a cutter head, and this handle of a knife is made with stainless steel, carbon steel or wolfram steel material, and an end indent of this handle of a knife forms a groove, and this cutter head is made with wolfram steel material.During assembling, first to heat this handle of a knife, make the groove aperture expansion of this handle of a knife, then again this cutter head is inserted in the groove of this handle of a knife, after the temperature groove cooling, handle of a knife for the treatment of handle of a knife dwindles, can this cutter head is clamping in the groove on this cutter top, make this handle of a knife and cutter head mutually combine fixing in friction tight mode.
Above-mentioned cutter in use, is first this handle of a knife to be clamped and fastened on a board, then aims at machined object with this cutter head, then utilizes board to drive solid tool to rotate, and can make this cutter head hole or milling to this machined object ... etc. machining operation.Wherein, while carrying out various machining operation under the state of this cutter in high speed rotating, can bear high torsion, but owing to only interconnecting in friction tight mode merely between the handle of a knife of this cutter and cutter head, therefore in the process of processing, the cutter of the prior art tends to rupture because bearing this high torsion, particularly in the junction of this handle of a knife and cutter head, produce the phenomenon of fracture, so not only cause the loss of the not good and cutter of processing quality, also easily increase the danger in operation simultaneously.
Utility model content
Because the existing problem of above-mentioned prior art, the purpose of this utility model is to provide a kind of welded type bar and cutter can be firmly a handle of a knife and a cutter head being mutually combined.
In order to reach above-mentioned utility model object, the utility model proposes a kind of welded type bar, comprising:
One handle of a knife stock, runs through between the front end face of this handle of a knife stock and rear end face and is formed with one first through hole;
One cutter head stock, this cutter head stock has a portion to be processed and a weld part, and this weld part protrudes an end face that is formed at this portion to be processed, and this weld part is inserted and is fixed in the first through hole of this handle of a knife stock from the front end face of this handle of a knife stock.
Above-mentioned welded type bar can further comprise an end cap, forms the affixed protuberance of a protrusion on an end face of this end cap, and the affixed protuberance of this end cap is fixed on the first through hole of this handle of a knife stock from the rear end face packing of this handle of a knife stock.
In the portion to be processed of above-mentioned cutter head stock and weld part, also can be formed with second through hole that runs through vertically two opposing end surfaces of this cutter head stock.
The external diameter of the external diameter of above-mentioned this cutter head stock and this handle of a knife stock is different.
The external diameter of the portion to be processed of above-mentioned cutter head stock is identical with the external diameter of weld part
The utility model separately proposes more than one and states the welded type cutter that welded type bar is further processed into, and this welded type cutter comprises:
One handle of a knife, runs through between the front end face of this handle of a knife and rear end face and is formed with one first through hole;
One cutter head, this cutter head has a cutting part and a weld part, and this weld part protrudes an end face that is formed at this cutting portion, and this weld part is inserted and is fixed in the first through hole of this handle of a knife from the front end face of this handle of a knife.
The cutting portion of above-mentioned cutter head comprises the spiral helicine helicla flute of multiple tracks.
Above-mentioned handle of a knife can have a clamping shank, one end of this clamping shank extends to form a knife bar portion vertically, the external diameter of this knife bar portion is less than the external diameter of this clamping shank, in this clamping shank and knife bar portion, run through and form above-mentioned the first through hole, the weld part of above-mentioned cutter head can insert and be fixed in the first through hole of this handle of a knife from the end face of the knife bar portion of this handle of a knife.
In the outside wall surface of the knife bar portion of above-mentioned handle of a knife, can be formed with the spiral helicine helicla flute of multiple tracks, the cutting portion of above-mentioned cutter head can comprise the spiral helicine helicla flute of multiple tracks, the corresponding helicla flute that is communicated with this handle of a knife of helicla flute of this cutter head.
The affixed protuberance of above-mentioned end cap can be fixed on the first through hole of this handle of a knife from the end face packing of the clamping shank of this handle of a knife.
The external diameter of the cutting portion of above-mentioned cutter head can be identical with the external diameter of weld part.
In the cutting portion of above-mentioned cutter head and weld part, can be formed with second through hole that runs through vertically two opposing end surfaces of this cutter head.
Above-mentioned welded type cutter can further comprise an end cap, forms the affixed protuberance of a protrusion on an end face of this end cap, and the affixed protuberance of this end cap is fixed on the first through hole of this handle of a knife from the rear end face packing of this handle of a knife.
The utility model has the advantage of: first, in the time of in the first through hole that the weld part of this cutter head stock is fixed on to this handle of a knife stock with welding manner, the inner gas expanding because being heated of the first through hole of this handle of a knife stock can be discharged from the rear end face of handle of a knife stock, can oppositely the weld part of this cutter head stock scolder around not pushed out to the first through hole of this handle of a knife stock, therefore can make this cutter head stock closely engage with the joint of handle of a knife stock; Secondly, as long as the junction of this cutter head and handle of a knife is heated, make to connect the solder fusing of this cutter head and handle of a knife, then from the rear end face of this handle of a knife, the first through hole of this handle of a knife is poured into gases at high pressure or inserts thimble again, can utilize gas pressure or thimble this cutter head and scolder to be pushed out to the first through hole of this handle of a knife, to another cutter head is installed on this handle of a knife; Moreover, when this cutter is being holed or during milling operation, also can cooling fluid be injected to this first through hole from the rear end face of this handle of a knife, make this cooling fluid from the rear end face of this handle of a knife overflows again along the outside wall surface cross flow of this handle of a knife, or flow out from the second through hole of cutter head, and then reduce the temperature of this cutter.
Accompanying drawing explanation
The following drawings is only intended to the utility model to schematically illustrate and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is the three-dimensional exploded view of the first preferred embodiment of welded type bar of the present utility model.
Fig. 2 is the side cutaway view of the first preferred embodiment of welded type bar of the present utility model.
Fig. 3 is the three-dimensional exploded view of the first preferred embodiment of welded type cutter of the present utility model, and wherein the welded type cutter of this first preferred embodiment is to utilize the welded type bar of this first preferred embodiment made.
Fig. 4 is the side-looking fragmentary cross-sectional view of the first preferred embodiment of welded type cutter of the present utility model.
Fig. 5 is the three-dimensional exploded view of the second preferred embodiment of welded type bar of the present utility model.
Fig. 6 is the side cutaway view of the second preferred embodiment of welded type bar of the present utility model.
Fig. 7 is the side-looking fragmentary cross-sectional view of the second preferred embodiment of welded type cutter of the present utility model.
Fig. 8 is the three-dimensional exploded view of the 3rd preferred embodiment of welded type bar of the present utility model.
Fig. 9 is the side cutaway view of the 3rd preferred embodiment of welded type bar of the present utility model.
Figure 10 is the side-looking fragmentary cross-sectional view of the 3rd preferred embodiment of welded type cutter of the present utility model, and wherein the welded type cutter of the 3rd preferred embodiment is to utilize the welded type bar of the 3rd preferred embodiment made.
Figure 11 is the three-dimensional exploded view of the 4th preferred embodiment of welded type bar of the present utility model.
Figure 12 is the side cutaway view of the 4th preferred embodiment of welded type bar of the present utility model.
Figure 13 is the side-looking fragmentary cross-sectional view of the 4th preferred embodiment of welded type cutter of the present utility model.
Main element label declaration:
10,10A, 10B, 10C bar
11,11A handle of a knife stock R1 external diameter
111 first through holes 12,12A, 12B, 12C cutter head stock
R2 external diameter 121,121B, 121C weld part
122,122B, 122C portion to be processed
123C the second through hole 13 end caps
131 affixed protuberances 20,20A, 20B, 20C cutter
21,21A, 21C handle of a knife 211 clamping shanks
212 knife bar portion 213 helicla flutes
22,22A, 22B, 22C cutter head
221,221B, 221C cutting portion
222 helicla flutes
The specific embodiment
For technical characterictic of the present utility model, object and effect being had more clearly, understand, now contrast accompanying drawing the specific embodiment of the present utility model is described.
Shown in Fig. 1 and Fig. 2, be the first preferred embodiment of welded type bar 10 of the present utility model, this welded type bar 10 comprises a handle of a knife stock 11, a cutter head stock 12 and an end cap 13.
The profile of this handle of a knife stock 11 is roughly bar shape and can utilizes stainless steel, carbon steel or wolfram steel material to make, this handle of a knife stock 11 has a front end face and a rear end face, between the front end face of this handle of a knife stock 11 and rear end face, run through vertically and form one first through hole 111, the aperture length of the first through hole 111 of this handle of a knife stock 11 be this handle of a knife stock 11 outer electrical path length 1/2nd to 1/4th be preferred proportion.
This cutter head stock 12 is located at the front end face of this handle of a knife stock 11, this cutter head stock 12 can utilize wolfram steel, polycrystalline diamond, cubic boron nitride or pottery ... Deng high-hardness, make, this cutter head stock 12 has a portion 122 to be processed and a weld part 121, this portion 122 to be processed is roughly bar shape, this weld part 121 protrudes an end face that is formed at this portion 122 to be processed, this weld part 121 is placed in the first through hole 111 of this handle of a knife stock 11 from the front end face of this handle of a knife stock 11, and utilize solder technology that the outside wall surface of the weld part 121 of the internal face in the first through hole 111 of this handle of a knife stock 11 and this cutter head stock 12 is mutually combined fixing by scolder, and then this cutter head stock 12 is engaged to the front end face that is fixed on this handle of a knife stock 11.
This end cap 13 is located at the rear end face of this handle of a knife stock 11, on one end face of this end cap 13, form the affixed protuberance 131 of a protrusion, the affixed protuberance 131 of this end cap 13 is fixed on the first through hole 111 of this handle of a knife stock 11 with friction tight mode packing from the rear end face of this handle of a knife stock 11.
In the specific embodiment of the present utility model, this handle of a knife stock 11 forms respectively cylindrical shape with the portion to be processed 122 of cutter head stock 12, the first through hole 111 of this handle of a knife stock 11 is the rounded hole of section, and the weld part 121 of this cutter head stock 12 and the affixed protuberance 131 of end cap 13 form respectively the cylinder matching with this first through hole 111.In addition, this handle of a knife stock 11 also can form polygon bar shape with the portion to be processed 122 of cutter head stock 12, the first through hole 111 of this handle of a knife stock 11 also can form section and be polygonal hole, the weld part 121 of this cutter head stock 12 and the affixed protuberance 131 of the end cap 13 polygon post that corresponding formation matches with this first through hole 111 respectively.
Above-mentioned welded type bar 10 can further be processed into a welded type cutter, wherein, this handle of a knife stock 11 can be all drilling tool or milling cutter tool according to the type of the cutter that will form with the width size of the length ratio of cutter head stock 12 and the weld part 121 of this cutter head stock 12 ... Deng cutting tool and adjust.
Shown in Fig. 3 and Fig. 4, welded type cutter 20 for one first preferred embodiment that the further machining of the welded type bar of above-mentioned the first preferred embodiment 10 is made, this welded type cutter 20 comprises a handle of a knife 21, a cutter head 22 and aforementioned end cap 13, wherein:
This handle of a knife 21 is that above-mentioned handle of a knife stock 11 is carried out to machining formation, this handle of a knife 21 has a clamping shank 211, one end of this clamping shank 211 extends to form a knife bar portion 212 vertically, the external diameter of this knife bar portion 212 is less than the external diameter of this clamping shank 211, and in the outside wall surface of this knife bar portion 212, be formed with the helicla flute 213 of multiple tracks helical form winding, in this clamping shank 211 and knife bar portion 212, run through the first through hole 111 that forms above-mentioned handle of a knife stock 11;
This cutter head 22 is that the portion to be processed 122 of above-mentioned cutter head stock 12 is processed to form to a cutting part 221 is made, on one end face of this cutting portion 221, be formed with aforementioned weld part 121, this cutting portion 221 can comprise the helicla flute 222 of multiple tracks helical form winding, the corresponding helicla flute 213 that is communicated with this handle of a knife 21 of helicla flute 222 of this cutter head 22, the weld part 121 of this cutter head 22 is inserted and is fixedly welded on the first through hole 111 of this handle of a knife 21 from the end face of the knife bar portion 212 of this handle of a knife 21;
The affixed protuberance 131 of this end cap 13 is fixed on the first through hole 111 of this handle of a knife 21 with friction tight mode packing from the end face of the clamping shank 211 of this handle of a knife 21.
Shown in Fig. 5 and Fig. 6, the second preferred embodiment for welded type bar 10A of the present utility model, wherein, the external diameter R1 of the external diameter R2 of this cutter head stock 12A and this handle of a knife stock 11A is different, specifically, the external diameter R2 of this cutter head stock 12A is greater than the external diameter R1 of this handle of a knife stock 11A, in addition, the handle of a knife stock 11A of this second preferred embodiment is identical with the affixed mode of cutter head stock 12 with the affixed mode of cutter head stock 12A and the handle of a knife stock of aforementioned the first preferred embodiment 11, does not repeat them here.
Shown in Fig. 7, be the second preferred embodiment of welded type cutter 20A of the present utility model, wherein: the first through hole 111 that is formed with above-mentioned handle of a knife stock 11 between a front end face of this handle of a knife 21A and a rear end face; This cutter head 22A forms the length stock body close with this handle of a knife 21A, and the weld part 121 of this cutter head 22A is inserted and is fixedly welded on the first through hole 111 of this handle of a knife 21A from the front end face of this handle of a knife 21A.
Shown in Fig. 8 and Fig. 9, the 3rd preferred embodiment for welded type bar 10B of the present utility model, wherein, the external diameter of the 122B of portion to be processed of this cutter head stock 12B is identical with the external diameter of weld part 121B, makes this cutter head stock 12B form the body of rod of an even thickness.
Shown in Figure 10, welded type cutter 20B for one the 3rd preferred embodiment that the further machining of welded type bar 10B of above-mentioned the 3rd preferred embodiment is made, wherein, the cutter head 22B of this welded type cutter 20B is processed to form cutting portion 221B to the district 122B to be processed of the cutter head stock 12B of above-mentioned the 3rd preferred embodiment, the external diameter of the cutting portion 221B of this cutter head 22B is identical with the external diameter of weld part 121B, makes this cutter head 22B form the body of rod of an even thickness.
Shown in Figure 11 and Figure 12, the 4th preferred embodiment for welded type bar 10C of the present utility model, wherein, in the 122C of portion to be processed of this cutter head stock 12C and weld part 121C, be also formed with a second through hole 123C who runs through vertically two opposing end surfaces of this cutter head stock 12C.
Shown in Figure 13, welded type cutter 20C for one the 4th preferred embodiment that the further machining of welded type bar 10C of above-mentioned the 4th preferred embodiment is made, wherein, the cutter head 22C of this welded type cutter 20C is processed to form cutting portion 221C to the 122C of portion to be processed of the cutter head stock 12C of above-mentioned the 4th preferred embodiment, is formed with the second through hole 123C of aforementioned cutter head stock 12C in the cutting portion 221C of this cutter head 22C and weld part 121C.
By design as above, when by this cutter head stock 12, 12A, 12B, the weld part 121 of 12C, 121B, 121C is fixedly welded on this handle of a knife stock 11, the first through hole 111 of 11A is when interior, this handle of a knife stock 11, the inner gas expanding because being heated of the first through hole 111 of 11A can be from handle of a knife stock 11, the rear end face of 11A is discharged, to avoid when the corresponding handle of a knife stock 11 of this first through hole 111, when one end of the rear end face of 11A is sealing, this the first through hole 111 internal cause temperature raise and the high pressure gas of volumetric expansion is known from experience cutter head stock 12, 12A, 12B, the weld part 121 of 12C, 121B, the problem that 121C scolder is around pushed out this first through hole 111, also can be whereby in handle of a knife stock 11, in 11A, form the design of the first through hole 111, make this cutter head stock 12, 121B, 121C and handle of a knife stock 11, the joint of 11A can more closely engage,
Secondly, when this cutter 20, 20A, 20B, the cutter head 22 of 20C, 22A, 22B, 22C is because of after damaging through long use, operator can first unload this end cap 13, again to this cutter head 22, 22A, 22B, 22C and handle of a knife 21, heat the junction of 21A, make to connect this cutter head 22, 22A, 22B, 22C and handle of a knife 21, the solder fusing of 21A, then again from this handle of a knife 21, the rear end face of 21A is to this handle of a knife 21, the first through hole 111 of 21A pours into gases at high pressure or inserts thimble, can be by this cutter head 22, 22A, 22B, 22C and scolder are pushed out this first through hole 111, in order to follow-up can be firmly again by the cutter head 22A of a replacement use, the weld part 121 of 22B, 121B is fixedly welded on this handle of a knife 21A, in the first through hole 111 of 22B,
Moreover, when utilizing the aforementioned first cutter 20 to the 3rd preferred embodiment, 20A, 20B, holing or during milling operation, operator also can unload this end cap 13, and from the rear end face of this handle of a knife 21,21A, cooling fluid is injected to this first through hole 111, make the direction cross flow along the outside wall surface of this handle of a knife 21,21A towards this cutter head 22,22A, 22B again from the rear end face of this handle of a knife 21,21A overflows of this cooling fluid, and then reduce high temperature, high heat that this cutter head 22,22A, 22B produce because of friction.And when utilizing the cutter 20C of aforementioned the 4th preferred embodiment to hole or during milling operation, the cooling fluid of injecting from the rear end face of this handle of a knife 21C can flow directly into from the first through hole 111 of this handle of a knife 21C the second through hole 123C of this cutter head 22C, from the front end of this cutter head 22C, flow out again, and then reach the object of the temperature that reduces this cutter 20C.
The above is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model, any those skilled in the art, within not departing from the scope of technical solutions of the utility model, any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all still belong in the scope of technical solutions of the utility model.
Claims (14)
1. a welded type bar, is characterized in that, this welded type bar comprises a handle of a knife stock and a cutter head stock, wherein:
Between the front end face of this handle of a knife stock and rear end face, run through and be formed with one first through hole;
This cutter head stock has a portion to be processed and a weld part, and this weld part protrudes an end face that is formed at this portion to be processed, and this weld part is inserted and is fixed in the first through hole of this handle of a knife stock from the front end face of this handle of a knife stock.
2. welded type bar as claimed in claim 1, it is characterized in that, this welded type bar further comprises an end cap, forms the affixed protuberance of a protrusion on an end face of this end cap, and the affixed protuberance of this end cap is fixed on the first through hole of this handle of a knife stock from the rear end face packing of this handle of a knife stock.
3. welded type bar as claimed in claim 1, is characterized in that, is formed with second through hole that runs through vertically two opposing end surfaces of this cutter head stock in the portion to be processed of this cutter head stock and weld part.
4. welded type bar as claimed in claim 2, is characterized in that, is formed with second through hole that runs through vertically two opposing end surfaces of this cutter head stock in the portion to be processed of this cutter head stock and weld part.
5. the welded type bar as described in any one in claim 1 to 4, is characterized in that, the external diameter of the external diameter of this cutter head stock and this handle of a knife stock is different.
6. the welded type bar as described in any one in claim 1 to 4, is characterized in that, the external diameter of the portion to be processed of this cutter head stock is identical with the external diameter of this weld part.
7. a welded type cutter of being processed into the welded type bar described in any one in claim 1 to 4, is characterized in that, this welded type cutter comprises a handle of a knife and a cutter head, wherein:
Between the front end face of this handle of a knife and rear end face, run through and be formed with one first through hole;
This cutter head has a cutting part and a weld part, and this weld part protrudes an end face that is formed at this cutting portion, and this weld part is inserted and is fixed in the first through hole of this handle of a knife from the front end face of this handle of a knife.
8. welded type cutter as claimed in claim 7, is characterized in that, the cutting portion of this cutter head comprises the spiral helicine helicla flute of multiple tracks.
9. welded type cutter as claimed in claim 7, it is characterized in that: this handle of a knife has a clamping shank, one end of this clamping shank extends to form a knife bar portion vertically, the external diameter of this knife bar portion is less than the external diameter of this clamping shank, runs through and form this first through hole in this clamping shank and this knife bar portion; The weld part of this cutter head is inserted and is fixed in the first through hole of this handle of a knife from the end face of the knife bar portion of this handle of a knife.
10. welded type cutter as claimed in claim 9, it is characterized in that, in the outside wall surface of the knife bar portion of this handle of a knife, be formed with the spiral helicine helicla flute of multiple tracks, the cutting portion of this cutter head comprises the spiral helicine helicla flute of multiple tracks, the corresponding helicla flute that is communicated with this handle of a knife of helicla flute of this cutter head.
11. welded type cutters as claimed in claim 7 or 8, is characterized in that, the external diameter of the cutting portion of this cutter head is identical with the external diameter of this weld part.
12. welded type cutters as described in any one in claim 7 to 10, is characterized in that, are formed with second through hole that runs through vertically two opposing end surfaces of this cutter head in the cutting portion of this cutter head and weld part.
13. welded type cutters as claimed in claim 11, is characterized in that, are formed with second through hole that runs through vertically two opposing end surfaces of this cutter head in the cutting portion of this cutter head and weld part.
14. welded type cutters as described in any one in claim 7 to 10, it is characterized in that, this welded type cutter further comprises an end cap, on one end face of this end cap, form the affixed protuberance of a protrusion, the affixed protuberance of this end cap is fixed on the first through hole of this handle of a knife from the rear end face packing of this handle of a knife.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320496131.4U CN203448722U (en) | 2013-08-14 | 2013-08-14 | Welded bar stock and tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320496131.4U CN203448722U (en) | 2013-08-14 | 2013-08-14 | Welded bar stock and tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203448722U true CN203448722U (en) | 2014-02-26 |
Family
ID=50128626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320496131.4U Expired - Lifetime CN203448722U (en) | 2013-08-14 | 2013-08-14 | Welded bar stock and tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203448722U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368849A (en) * | 2013-08-14 | 2015-02-25 | 铠钜科技股份有限公司 | Welded rod and tool |
| CN111069677A (en) * | 2020-01-03 | 2020-04-28 | 昆山易时腾合金工具有限公司 | Low-cost hard alloy milling cutter |
-
2013
- 2013-08-14 CN CN201320496131.4U patent/CN203448722U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368849A (en) * | 2013-08-14 | 2015-02-25 | 铠钜科技股份有限公司 | Welded rod and tool |
| CN111069677A (en) * | 2020-01-03 | 2020-04-28 | 昆山易时腾合金工具有限公司 | Low-cost hard alloy milling cutter |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |